DE1816192A1 - Tool for cutting pipes - Google Patents

Description

Patent attorneys Dipl.-Ing. RWeickmann,

Dipl.-Ing. H.Weickmann, Dipl.-Phys. Dr. K. Fincke Dipl.-Ing. F. A. Weickmann, Dipl.-Chem. B. Huber

8 MUNICH 27, DEN

MÖHLSTRASSE 22, CALL NUMBER 48 3921/22

I / GA

File number: P 1 cS 1υ 192.7
Applicant: ITÜ-Imperial Corporation

Tool for cutting pipes

The invention relates to a tool for machining, in particular for cutting pipes.

A conventional embodiment of such a tool for cutting pipes, especially copper pipes, can be operated by hand and instructs you Cutting wheel supporting base body. The cutting wheel is connected to the base body by suitable means connected handle are provided, pressed against the outer wall of the tube. This is where the main body pivoted about the axis of the pipe with the cutting wheel moving over the outer surface of the pipe and leaves an annular notch. During the pivoting movement, the cutting wheel is progressively drawn into the tube wall pressed. When the child oath is over, the cut end of the tube is deburred inside by a blade that is movably arranged on the base body is. The present invention relates to an improvement

909842/0296

of a tool for cutting tubes of the type described above. The improvement relates to the means for deburring the cut edges of a cut oil pipe.

The proposal according to the invention is that the Deburring device has a scraper blade, which with a scraper edge for deburring the inner cutting edge of a tube cut through with the tool

It can be seen that means for fastening the scraper blade to the base body are provided, which enable a pivoting movement of the scraper blade between a position of use in which the scraper blade is stretched away from the base body and a non-use position in which the scraper blade rests on the base body, allow that means for blocking the scraper blade are provided either in the use position or in the non-use position and that on the surface of the scraper blade facing away from the base body in the non-use position at least one protruding edge is provided which extends essentially transversely to the longitudinal direction of the scraper blade.

> stretches and the grip for swiveling the sciabeblade improved with the fingers as well as for deburring the outer cutting edge of a cut with the tool Tube can serve.

A further development of the invention can consist in that on the in the non-use position of the base body A plurality of protruding edges are provided on the facing surface of the scraper blade.

Another development of the invention can consist in that the protruding edges are designed as bearing edges are.

909842/0206

BATH

1-8-1 ß TB

Another development of the invention can order that the basic body in -the non-use ~ - -srfcellung zugeuaiidfee ^ side of the scraper blade is smooth.

Another development of the invention can be ordered therein, that the fastening racks for the scraper blade include a screw that the threaded shaft of the screw in; the Grundkqrp; eir is screwed in and through You .Schabeklinge extends that the head of the screw rests outside on the outer surface of the scraper blade and that on the threaded shaft of the SdhraUbe one Disc sits, which is located between the outer surface the scraper blade and the head of the screw.

An exemplary embodiment of FIG Invention described with reference to the accompanying drawing. Show it:

FIG. 1 is a side view of the tool for cutting pipes according to the present invention, in which the scraper blade in the use position is drawn in dashed lines;

. Figure E is a top plan view of the tool;

Figure 3 is a partial top view along line 7-7 of IFig-. 1, where the: scraper blade is shown in the position of use.

.Animal example; alternatively, the embodiment of the invention, ; it is shown in Pigur 1 ;, w; ir * d the tool

9 09: 8 42 / Q2M bad original.

1816132

Sections of toners in general with the reference number 10 are better. Us comprises a base body 11, a child wheel holder IS held by the base body 11 and displaceable in this part, and a cutting wheel 13 arranged on the linden of the cutting edge 12 which is to be brought into contact with the pipe T when the pipe T is cut . Are the Grundkör by Tl \ Veit "rhin Sttttzirollen 1% ¥ öifesÄ"% against whom that Bohx T supported when the Sclineidrad k I'3 fiddling the itolir is gedrtickt, Babei is the basic

body Ii mm, the axis 15 of the Rolir "s Ψ gesehwenkt tßxd the Senneidrad with its cutting edge in the i6 Itonr-

pressed. The shift of the wheel * - 12 takes place by confirmation "ines BrengrixTes 17"

The sclineidräci 13 is free around the acfase of the Äclisbolzens 51 three-bar, whereby the service life of the setei6idi * adkante 1.6- er3a! H is reduced. ¥ ie from one ITIG "can ersefeen 1 _f ^ © * fa am- the base body -a ü-'förniiges Eleöieai-t BIIT a Xlaüenteil 55v weleheir CLTE at its flaöHeü ÄußensTiä ^ is yerseiien 6 with a Ausnelimung 5 *. In the recess 56 an iürsatzsclineidrad % B can be inserted, which serves for the rope eh. Of the shooting wheel 13, vetm the ^ ssen edge has been ststtiapi "ige ..

U SF ^ a * ζ cutting wheel 58 is in äei "Atisaneiaaniaitg 36

59 gÄalteni

^ ntgratungste-ia. 6 © contains _f the lräi = ty? Tem du »cli an approach <6 * l · ^ © 3Ε% αϊΐαβίη is%» is s ^ ehwenfebar at € &

An * · scih; ra # be 62 attached, the "deii" SiöbaaTt 63 of the screw 62 extends dörixh a läasglixiheaa Sfehlitz 6k in the approach; 61 ,. The Sclilitz 6% earsitr «ö goes in ϊία along && £ den sehinaler become «* ideYes. '

BATH ORIGINAL

Section of the triangular part 60. Between the head 6 of the screw 62 and the outer surface 67 of the scraper blade, a spring washer 65 is provided which presses the scraper blade elastically against the outer surface 57; The underside 6iJ of the scraper blade is relatively smooth so that the scraper blade can slide freely over the surface 57 when it is moved from the non-use position (fully indicated) to the use position (shown in dashed lines) and vice versa. A stop 72 is provided on the base body 11, against which the shoulder 61 of the scraper blade strikes when the scraper blade is pivoted about the screw shaft 63 when the scraper blade has reached its position of use. The approach 72 thus prevents further pivoting to the right in the position of use. The extension 7 ^{2 also} forms a limit for a pivoting movement to the left when the scraper blade is in its non-used position. In this way, the stop 7 ² only allows the scraper blade to move between the use position and the non-use position. When a user wants to move the scraper blade from the use position into the non-use position or vice versa, he has to move away, the scraper blade initially from the screw shaft 63 so far., _C _How permits the slot 64. The scraper blade can then be swiveled accordingly and must then be moved again against the screw shaft 63, to be precise as far as the slot 64 allows.

According to the invention, improved means for facilitating the movement are of the scraper blade toward and away from the Schraubenachaft provided "~ '" ■

909842/0296

These means can be formed by a projecting edge which extends transversely to the direction of movement of the scraper blade, which in turn extends radially to the axis of the screw 62. In the present example, a plurality of protruding edges 69 are provided on the outer surface 67 of the scraper blade, which can best be seen in FIG. The projecting edges 69 extend at k an angle of less than 90 to the mentioned radial direction. The protruding edges 69 thus facilitate the movement of the scraper blades between the position of use and the position of non-use.

Further protruding edges 69 are also provided, which define a surface and for deburring the outer cutting edge of a pipe interface to serve. The inner cut edge of a pipe interface is conventionally provided by an on the blade portion 60 provided scraper edge 70 deburred. The inside edge but can also be deburred by filing with the pointed part 71 of the scraper blade will.

The protruding edges 69 extend over the. entire outer surface 67 of the scraper blade including the shoulder 6i. In this way, the protruding edges 69 serve at the same time to drive the spring ring 65 through the scraper blade 59t when the latter is pivoted.

The difference in the frictional properties of the smooth inner surface 68 and the rough outer surface

9098427029S

- ■? ■ -

the Seliafoteltiiiige «rinöglijelj / eia se In« foessiere UewiegiMig the side aic ling « between the lung and the

vorspfing «iiden iCanten Ö9 teöiin'eii iswar so net be =, tJass it sicli in the A \ res © nt; liclien zur liängsriclitiiiii; Der StrictbekliHg «erstrieck ^ eii» It is * ioa: i; eiHmft, di-e vorsipringeiiideii Kanteii 69 tinter Wijrky & lgvegen the longitudinal direction of the Seliä; * - <6 ^? 9 vserlaiai "" !! zn so that the vörsiJrin- _; gei] your Itajiteii 69 part of a turning of the £> e! Iabekling £ JF ^ offers longer melxr Iialt.

BATH ORIGINAL

Claims (1)

PATENT CLAIMS ! Tool for cutting pipes, with a base body, a cutting wheel which is attached to a cutting wheel holder that can be displaced in the base body, and a device for deburring the cut edges of a cut tube, thereby marked W net that the deburring device (13) has a scraper blade (59) which is provided with a scraper edge (70) for deburring the inner cutting edge of a tube (τ) cut through with the tool (10), that means (62,65 _f 63) are provided for fastening the scraper blade (59) to the base body (11,20,55), a pivoting movement of the scraper blade (59) is stretched away from the base body (11,20,55), and a non-use position in which the Scraper blade (59) rests on the base body (11, 20, 55), allow means (6k) for blocking the scraper blade (59) either in the position of use or . are provided in the non-use position and that on the surface of the scraper blade (59) facing away from the base body (11, 20, 55) when not in use, at least one protruding edge (69) is provided which extends essentially transversely extends to the longitudinal direction of the scraper blade and improves the grip for pivoting the scraper blade {59) with the fingers, and can serve to deburr the outer cutting edge of a tube (τ) cut through with the tool (10). BATH ORIGINAL 909842/029 6 181 ifSl Q. _ auf 4 ** "W 4 ³ ^ Uiclit ^ ebraußliasieiitiiig: vim Qb & rflaclve 4 «. = P , 4 ^^ 4 * ^ varateJieiKäeii Kaiiten J ^ 6.9J as. stiitd. 4ßi 'iUis ^ iWßlVit 1 to 3 * l string 4 h-st 1 lais 4t, et ine
aßiSr ^ m ^ 4paJ! | φϊψ (! «« indeaeliaf ib | ^ 3i} der ScnraMb «in 4 «^ ^8AD Empty e i ie